Process of producing hydrohalic acids and metal oxides
Abstract
Abstract A PROCESS OF PRODUCING HYDROHALIC ACID AND METAL OXIDE FROM A METAL HALIDE SOLUTION, WHEREIN METAL HALIDE IS PRECIPITATING FROM THE METAL HALIDE SOLUTION IN A PRECIPITATION STEP, AND THE PRECIPITATED HALIDE IS SEPARATED FROM THE MOTHER LIQUOR AND IS THERMALLY DECOMPOSED WITH OXYGEN, STEAM OR A MIXTURE THEREOF, TO YIELD A HOT HYDROHALIC ACID CONTAINING GAS AND METAL OXIDE, CHARACTERIZED IN THAT: (A) MOTHER LIQUID IS RECYCLED TO THE PRECIPITATION STEP, (B) SAID RECYCLE MOTHER LIQUOR, PRIOR TO THE PRECIPITATION STEP BEING SUBJECTED TO DIRECT HEAT EXCHANGE WITH SAID HOT HYDROHALIC ACID-CONTAINING GAS, (C) THE MOTHER LIQUOR RECYCLE STREAM IS RECYCLED SO OFTEN THAT THE THROUGHPUT OF RECYCLE MOTHER LIQUOR PER UNIT OF TIME AMOUNTS TO 4 TO 20 TIMES THE AMOUNT OF METAL HALIDE SOLUTION WHICH IS FED TO THE PROCESS PER UNIT OF TIME.
Inventors
- 👤 Dieter Ueberle
- 👤 Ernst Heinz
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
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